# Molecular regulation of adipose tissue development, homeostasis and expansion

> **NIH NIH K01** · UNIVERSITY OF ILLINOIS AT CHICAGO · 2020 · $158,365

## Abstract

Project Summary
Childhood and adult obesity and their associated metabolic complications is a public health problem. In the
United States alone, more than 67% of adults and 33% of children are currently overweight or obese, which
can cause both immediate and long-term health problems. If this epidemic is uncorrected it will lead to a range
of ensuing metabolic disorders such as heart disease, diabetes, atherosclerosis, and cancer. Adipose or fat
tissues appear to be at the nexus of the obesity crisis. However, very little is known about the cells and
molecular mechanisms that oversee the formation and the expansion of adipocytes and adipose tissues. Our
recent findings using genetic mouse models demonstrate that there are two progenitor populations that give
rise to adipocytes: developmental progenitors, for adipose development, and adult progenitors, for adipose
homeostasis. In established adult adipose depots, not developmental adipose depots, adipocytes fate-map
from a perivascular residing progenitor cell pool. Contrary to adult adipose tissue, even less is known about the
cellular origin of developmental progenitor cells and the signals that control their cellular dynamics including
pattern, proliferation, migration and formation. The central focus of this proposal aims to use our genetic tools
to identify novel regulatory mechanisms important for adipose tissue development compared to adult adipose
tissue homeostasis and expansion. Previous studies have suggested that platelet derived growth factor
receptor α (PDGFRα) is an important potential source of developmental adipose progenitor cells. Furthermore,
PDGFRα+ cells contribute to adipose tissue expansion in respond to high fat diet feeding. However, few
studies have examined if PDGFRα, gene function, is critical for adipose tissue development or adult regulation.
Based on our preliminary data, I hypothesize that PDGFRα signaling is a central regulator of adipose tissue
development by establishing the adipose lineage. Thus the specific aims of this study are focused on: Aim 1:
Determine if PDGFRα is necessary for adipose tissue development (organogenesis). Aim 2: Determine the
mechanisms by which PDGFRα controls adipose tissue development. Aim 3: Determine if PDGFRα is
necessary for adult adipose tissue obesogenic expansion. Based on preliminary data, PDGFRα is critical for
the development of adipose tissue but not for maintaining it. It appears that PDGFRα regulates adipose
progenitor cell fate promoting adipose tissue organogenesis. These findings will be of great importance for
three reasons: 1) how embryonic cells adopt an adipose tissue cell fate, 2) the molecular underpinning that
govern this developmental cell fate, and 3) how adipose tissue expands in response to caloric excess
compared to adult adipose tissue homeostasis. These important findings may lead to novel discrete
therapeutic targets for childhood and adult obesity.

## Key facts

- **NIH application ID:** 9944548
- **Project number:** 5K01DK111771-06
- **Recipient organization:** UNIVERSITY OF ILLINOIS AT CHICAGO
- **Principal Investigator:** Yuwei Jiang
- **Activity code:** K01 (R01, R21, SBIR, etc.)
- **Funding institute:** NIH
- **Fiscal year:** 2020
- **Award amount:** $158,365
- **Award type:** 5
- **Project period:** 2016-09-19 → 2022-06-30

## Primary source

NIH RePORTER: https://reporter.nih.gov/project-details/9944548

## Citation

> US National Institutes of Health, RePORTER application 9944548, Molecular regulation of adipose tissue development, homeostasis and expansion (5K01DK111771-06). Retrieved via AI Analytics 2026-05-23 from https://api.ai-analytics.org/grant/nih/9944548. Licensed CC0.

---

*[NIH grants dataset](/datasets/nih-grants) · CC0 1.0*